To me, it gives a great view of what's going on, with a good wide screen shot.
But....
I'm finding that I'm still checking mirrors, turning head and then looking at the screen, back to mirrors/turning head/checking screen. It's almost sensory OCD overload. Ok...it is sensory OCD.

I get that my initial instinct when backing out of my driveway or into a parking spot still should be to look out each side for cross traffic, but I'm thinking once that's complete--just rely on the ole Navi-screen.

i use my mirrors and look to be sure and just use the cam to make sure tehre is nothing behind me as i have a huge blind spot behind the truck. i also love it for backing into parking spots. the little round convex mirrors are great to, to see where the back tires are.

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Check Out My Garage For Mods and Pics, There's A Few :P

Those are another thing I'm getting use to. The convex/blind spot mirror is about 1/5 the size of the regular mirror ( + 1 1/2" x 5") and I have noticed I've got a sizable blind spot w/ these mirrors that I didn't have w/ my other truck (w/ a small + 2x2 imbedded blind spot mirror) .

Mine also will tilt down when it goes into reverse--which helps see the back tire.